App\Http\Controllers\DocumentController::postUpload PHP Method

    public function postUpload(CreateDocumentRequest $request)
    {
        $result = $this->documentRepo->upload($request->all(), $doc_array);
        if (is_string($result)) {
            return Response::json(['error' => $result, 'code' => 400], 400);
        } else {
            return Response::json(['error' => false, 'document' => $doc_array, 'code' => 200], 200);
        }
    }